77Ir
过渡金属
铱 Ir
Iridium
物态与数值
- 物态
- 固态
- 周期／族
- 6／9
- 相对原子质量
- 192.2173 （不是质量数）
- 原始密度
- 22.56 g/cm3
- 归一化密度
- 22.56 g/cm³
- 来源熔点字段
- 2719.0 K（部分来源实际为三相点，教学前需核对条件）
- 来源沸点字段
- 4403.0 K
部分超重元素属性为预测值，不能当作已审实验值。氢原始气体密度单位与归一化单位不同，均保留展示。
英文来源解释
中文翻译待补。
Iridium is a chemical element with symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium) based on measured density, although calculations involving the space lattices of the elements show that iridium is denser. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. Although only certain molten salts and halogens are corrosive to solid iridium, finely divided iridium dust is much more reactive and can be flammable.
出处、中文名称与原始字段
- 来源位置
- multisubject/elements/raw/PeriodicTableJSON.json#/elements/76
- 原记录摘要
- 05e478cb1192c5bbfad8d9600fd3b4c7902c0966ad5d0408bfcc4d5092424c0d
- boil
- 4403
- melt
- 2719
- name
- Iridium
- xpos
- 9
- ypos
- 6
- block
- d
- group
- 9
- image
- {'url': 'https://upload.wikimedia.org/wikipedia/commons/a/a8/Iridium-2.jpg', 'title': 'Pieces of Pure Iridium, 1 gram. Original size: 0.1 - 0.3 cm each', 'attribution': 'Unknown authorUnknown author, CC BY 1.0 <https://creativecommons.org/licenses/by/1.0>, via Wikimedia Commons, source: https://images-of-elements.com/iridium.php'}
- phase
- Solid
- wxpos
- 23
- wypos
- 6
- number
- 77
- period
- 6
- shells
- [2, 8, 18, 32, 15, 2]
- source
- https://en.wikipedia.org/wiki/Iridium
- symbol
- Ir
- cpk-hex
- 175487
- density
- 22.56
- summary
- Iridium is a chemical element with symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium) based on measured density, although calculations involving the space lattices of the elements show that iridium is denser. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. Although only certain molten salts and halogens are corrosive to solid iridium, finely divided iridium dust is much more reactive and can be flammable.
- category
- transition metal
- named_by
- 未知
- appearance
- silvery white
- molar_heat
- 25.1
- atomic_mass
- 192.2173
- atomic_radii
- {'metallic': [135.5], 'empirical': [135], 'calculated': [180], 'van_der_waals': None, 'covalent_single': [122], 'covalent_triple': [107]}
- density_unit
- g/cm3
- spectral_img
- 未知
- bohr_model_3d
- https://storage.googleapis.com/search-ar-edu/periodic-table/element_077_iridium/element_077_iridium.glb
- density_g_cm3
- 22.56
- discovered_by
- Smithson Tennant
- bohr_model_image
- https://storage.googleapis.com/search-ar-edu/periodic-table/element_077_iridium/element_077_iridium_srp_th.png
- electron_affinity
- 150.94
- ionization_energies
- [880, 1600]
- electron_configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d7
- electronegativity_pauling
- 2.2
- electron_configuration_semantic
- [Xe] 4f14 5d7 6s2